Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Harriet Singelyn, PSYD
Psychologist in Keller, TX · enumerated 2017.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1639688476
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Registry record
Entity type Individual (Type 1)
Name Dr. Harriet Singelyn
Credential PSYD
Sex Female
Practice address 1710 Keller Pkwy # 4759, Keller, TX, 76248
Phone (210) 201-2364
Enumeration date Sep 25, 2017
Last updated in NPPES Nov 24, 2025
Taxonomy & licenses
PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice.
About the PSYD credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What specialty is Harriet Singelyn?
Harriet Singelyn is registered in NPPES with the primary taxonomy of Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-11-24.